Sammy Hagar is celebrating four decades as a rock star and he's bringing the party to his fans in Chicago. That's right, it's been 40 years since Hagar rose to fame with the group Montrose and his first song, "Bad Motor Scooter." After he left Montrose he joined Van Halen and the rest is history. The legendary Hall-of-Famer is promising to put on a high-octane performance filled with all the best from his prolific career, including "I Can't Drive 55," "Why Can't This Be Love," "Right Now" and many more. Hagar will be joined on the tour by his Chickenfoot bandmate (and former Van Halen bandmate) Michael Anthony and L.A. rockers Rival Sons.